Terence William Harvey Cox (born 13 March 1937, in High Wycombe, Buckinghamshire) played drums in the British folk rock bands The Pentangle, Duffy's Nucleus and Humblebums.

He also drummed with several other artists, most notably David Bowie and Elton John. He was drummer for Charles Aznavour between 1974 and 1982. In 1973, he had a songwriting partnership with Lynsey de Paul and Lenny Zakatek recorded two of their songs "Get Your Gun" and "Gotta Runaway" that was released as Zakatek on Bell Records.^{[clarification needed]}